
    <!DOCTYPE html>
    <html lang="zh-CN">
    <head>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <title>Chrome 浏览器插件开发指南 - 交互式测验</title>
      <style>
        @import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700&display=swap');
        
        body {
          font-family: 'Noto Sans SC', sans-serif;
          background-color: #f4f7f9;
          color: #333;
          display: flex;
          justify-content: center;
          align-items: center;
          min-height: 100vh;
          margin: 0;
          padding: 20px;
          box-sizing: border-box;
        }
        
        .main-wrapper {
            position: relative;
            width: 100%;
            max-width: 900px; /* Wider to accommodate buttons */
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .quiz-container {
          background-color: #ffffff;
          border-radius: 16px;
          box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
          width: 100%;
          max-width: 700px;
          overflow: hidden;
          z-index: 10;
        }

        .quiz-header {
          background-color: #4a90e2;
          color: white;
          padding: 20px 30px;
          text-align: center;
        }

        .quiz-header h1 {
          margin: 0;
          font-size: 24px;
          font-weight: 700;
        }
        
        .quiz-header p {
            margin: 5px 0 0;
            font-size: 14px;
            opacity: 0.9;
        }

        .quiz-body {
          padding: 30px;
        }

        .progress-bar {
            display: none; /* 隐藏进度条 */
            width: 100%;
            background-color: #e0e0e0;
            border-radius: 5px;
            height: 10px;
            margin-bottom: 20px;
        }

        #progress-indicator {
            height: 100%;
            width: 0%;
            background-color: #4caf50;
            border-radius: 5px;
            transition: width 0.3s ease;
        }

        #question-container {
          margin-bottom: 20px;
        }

        #question-text {
          font-size: 18px;
          font-weight: 500;
          line-height: 1.6;
          margin-bottom: 25px;
        }

        .options-list {
          list-style: none;
          padding: 0;
          margin: 0;
        }

        .option-item {
          background-color: #f8f9fa;
          border: 1px solid #dee2e6;
          border-radius: 8px;
          padding: 15px;
          margin-bottom: 12px;
          cursor: pointer;
          transition: background-color 0.2s ease, border-color 0.2s ease;
        }

        .option-item:hover {
          background-color: #e9ecef;
        }
        
        .option-item.selected {
            background-color: #d1e7fd;
            border-color: #4a90e2;
        }

        .quiz-footer {
          padding: 20px 30px;
          display: flex;
          justify-content: space-between; /* 将按钮分布在两侧 */
          align-items: center;
          min-height: 65px; /* Reserve space */
        }

        .nav-btn {
          background-color: #4a90e2;
          color: white;
          border: none;
          border-radius: 8px;
          padding: 10px 20px;
          font-size: 16px;
          font-weight: 500;
          cursor: pointer;
          transition: background-color 0.2s ease, transform 0.2s ease;
          box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        }
        
        #next-btn {
            background-color: #28a745;
        }

        .nav-btn:hover {
          background-color: #357abd;
          transform: scale(1.05);
        }
        
        .nav-btn:disabled {
            background-color: #a0c3e8;
            cursor: not-allowed;
            opacity: 0.7;
        }

        #result-container {
            border-top: 1px solid #eee;
        }
        
        .result-box {
            border-radius: 8px;
            padding: 20px;
            margin-top: 20px;
        }
        
        .result-box.correct {
            background-color: #d4edda;
            border: 1px solid #c3e6cb;
            color: #155724;
        }

        .result-box.incorrect {
            background-color: #f8d7da;
            border: 1px solid #f5c6cb;
            color: #721c24;
        }
        
        .result-box h3 {
            margin-top: 0;
        }

        .explanation-text {
            margin-top: 15px;
            line-height: 1.7;
        }
        
        .source-text {
            font-style: italic;
            font-size: 14px;
            margin-top: 15px;
            color: #555;
        }

        
        .final-score-container {
            padding: 40px;
            text-align: center;
        }
        .final-score-container h2 {
            margin-top: 0;
            margin-bottom: 30px;
        }
        .score-summary {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .score-card {
            background-color: #f8f9fa;
            border-radius: 12px;
            padding: 20px;
            width: 180px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            border: 1px solid #e9ecef;
        }
        .score-card h3 {
            margin: 0 0 10px;
            font-size: 16px;
            font-weight: 500;
            color: #555;
        }
        .score-card p {
            margin: 0;
            font-size: 28px;
            font-weight: 700;
            color: #333;
        }
        .score-details table {
            width: 100%;
            font-size: 16px;
        }
        .score-details td {
            padding: 4px 0;
        }
        .score-details td:last-child {
            text-align: right;
            font-weight: 700;
        }
        .report-actions button {
            background-color: #fff;
            border: 1px solid #ccc;
            border-radius: 8px;
            padding: 12px 25px;
            font-size: 16px;
            cursor: pointer;
            margin: 0 10px;
            transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
        }
        .report-actions button:hover {
            background-color: #f1f1f1;
            border-color: #bbb;
            transform: translateY(-2px);
        }
        .report-actions button.primary {
            background-color: #28a745;
            color: white;
            border-color: #28a745;
        }
        .report-actions button.primary:hover {
            background-color: #218838;
        }
        
        .hint-container {
            background-color: #e0f7fa;
            border: 1px solid #b2ebf2;
            border-radius: 8px;
            padding: 15px;
            margin-top: 20px;
            color: #006064;
            font-size: 15px;
            line-height: 1.6;
            display: none; /* 默认隐藏 */
        }
      </style>
    </head>
    <body>
      <div class="main-wrapper">
          <div class="quiz-container">
            <div class="quiz-header">
              <h1>Chrome 浏览器插件开发指南 - 交互式测验</h1>
              <p>检验你对文档内容的理解程度</p>
            </div>
            <div id="quiz-content">
                <div class="quiz-body">
                    <div class="progress-bar">
                        <div id="progress-indicator"></div>
                    </div>
                    <div id="question-container">
                      <p id="question-text"></p>
                      <ul class="options-list" id="options-list"></ul>
                    </div>
                    <div id="result-container"></div>
                    <div id="hint-container" class="hint-container"></div>
                </div>
                <div class="quiz-footer" id="quiz-footer">
                  <button id="prev-btn" class="nav-btn">上一题</button>
                  <button id="hint-btn" class="nav-btn" style="background-color: #ffc107; color: #333; box-shadow: 0 4px 12px rgba(255,193,7,0.3);">提示</button>
                  <button id="next-btn" class="nav-btn">下一题</button>
                </div>
            </div>
          </div>
      </div>

      <script>
        const quizData = [
  {
    "question": "在Chrome扩展开发中，`manifest.json`文件的核心作用是什么？",
    "options": [
      "它是一个配置文件，用于描述扩展的属性、权限和核心功能。",
      "它包含在后台运行的主要JavaScript逻辑。",
      "它定义了用户点击扩展图标时看到的弹出窗口（popup）的HTML结构。",
      "它是一种被注入到网页中以修改其DOM内容的脚本。"
    ],
    "correctAnswerIndex": 0,
    "explanation": "`manifest.json`是每个Chrome扩展的入口和大脑，它以JSON格式定义了扩展的所有元数据，包括名称、版本、所需权限、引用的脚本（如background script, content script）以及UI界面（如popup页面）等，是扩展的中心配置文件。",
    "source": "文档中「1. 基础知识」和「manifest.json」部分",
    "hint": "文档将这个文件描述为“配置文件，描述扩展的属性和权限”。"
  },
  {
    "question": "如果你的扩展需要读取并修改当前网页的内容（例如，更改页面背景色），应该使用哪种类型的脚本来实现？",
    "options": [
      "background script",
      "popup script",
      "content script",
      "service worker"
    ],
    "correctAnswerIndex": 2,
    "explanation": "Content Script是唯一一种运行在特定网页上下文中的脚本，它能够访问和操作该网页的DOM。文档中明确指出，`content script`是“可以读取和修改网页内容的脚本”。示例中正是`content.js`执行了修改背景色的操作。",
    "source": "文档中「1. 基础知识」和「content.js」部分",
    "hint": "想一想，哪个脚本的运行环境是与网页本身共享的？"
  },
  {
    "question": "根据文档中的代码示例，`popup.js`是如何与`content.js`进行通信以触发页面背景颜色更改的？",
    "options": [
      "通过直接调用`content.js`中定义的全局函数。",
      "通过使用`chrome.tabs.sendMessage()`发送消息，并由`content.js`中的`chrome.runtime.onMessage`监听器接收。",
      "通过修改浏览器的`localStorage`，`content.js`轮询检测该值的变化。",
      "通过在`popup.html`中触发一个自定义DOM事件，并由`content.js`捕获。"
    ],
    "correctAnswerIndex": 1,
    "explanation": "文档中的示例代码清晰地展示了Chrome扩展的标准消息传递机制。`popup.js`通过`chrome.tabs.sendMessage()`向当前活动标签页发送一个带有特定`action`的消息。而`content.js`则通过`chrome.runtime.onMessage.addListener()`注册一个监听器来接收这类消息，并根据消息内容执行相应操作。",
    "source": "文档中「popup.js」和「content.js」部分",
    "hint": "代码示例中使用了一种特定的`chrome` API来实现跨脚本通信，而不是通过共享变量或直接函数调用。"
  },
  {
    "question": "在开发和测试阶段，你应该如何打开开发者工具来调试扩展的`background script`（在Manifest V3中为Service Worker）？",
    "options": [
      "在任何网页上右键点击“检查”，打开的开发者工具即可调试。",
      "右键点击浏览器工具栏中的扩展图标，选择“检查弹出内容”。",
      "在`background.js`文件的第一行添加`debugger;`语句，然后重新加载扩展。",
      "进入`chrome://extensions`页面，找到你的扩展，并点击其下方的“检查视图 service worker”链接。"
    ],
    "correctAnswerIndex": 3,
    "explanation": "文档在“调试扩展”部分明确区分了不同组件的调试方法。对于`background script`（Service Worker），正确的方法是在扩展管理页面 (`chrome://extensions`) 点击专门为其提供的“检查视图 service worker”链接，这会打开一个专属于该脚本运行环境的DevTools窗口。",
    "source": "文档中「3. 开发与测试 - 调试扩展」部分",
    "hint": "文档为 `popup`、`background` 和 `content script` 提供了三种不同的调试入口。"
  },
  {
    "question": "当准备将扩展发布到Chrome Web Store时，关于创建`.zip`压缩包，文档强调了一个什么关键要求？",
    "options": [
      "压缩包的名称必须与`manifest.json`中的`name`字段完全一致。",
      "压缩包必须使用最高的压缩率以减小文件大小。",
      "压缩包的根目录必须直接包含`manifest.json`等扩展文件，而不是包含一个文件夹。",
      "压缩包内必须包含一个详细的`LICENSE`文件。"
    ],
    "correctAnswerIndex": 2,
    "explanation": "这是一个非常关键且容易出错的步骤。文档中特别指出：“确保 ZIP 文件直接包含扩展文件，而不是包含扩展目录”。如果将整个项目文件夹压缩，会导致`manifest.json`不在压缩包的根目录，Chrome Web Store将无法识别和解析你的扩展。",
    "source": "文档中「4. 发布到 Chrome Web Store - 创建压缩文件」部分",
    "hint": "这个要求关注的是压缩文件内部的文件结构，而不是它的名称或压缩级别。"
  },
  {
    "question": "在文档提供的`manifest.json`示例中，用于定义后台脚本的配置项是什么，这反映了哪个清单版本（Manifest Version）的规范？",
    "options": [
      "使用`\"background_script\": \"background.js\"`，这是Manifest V1的规范。",
      "使用`\"background\": {\"service_worker\": \"background.js\"}`，这是Manifest V3的规范。",
      "使用`\"scripts\": [\"background.js\"]`，这是Manifest V2的规范。",
      "使用`\"worker\": \"background.js\"`，这是一个通用的Web Worker规范。"
    ],
    "correctAnswerIndex": 1,
    "explanation": "示例中的`\"manifest_version\": 3`明确了其版本。在Manifest V3中，持久化的后台页面被非持久化的Service Worker取代。因此，定义后台脚本的方式也从Manifest V2的`\"background\": {\"scripts\": [...]}`变为了`\"background\": {\"service_worker\": \"...\"}`。",
    "source": "文档中「manifest.json」部分",
    "hint": "观察`manifest.json`示例的`manifest_version`字段，并找到与`background.js`相关的声明部分。"
  },
  {
    "question": "文档“注意事项”部分提到的“严格遵循最小权限原则”指的是什么？",
    "options": [
      "编写尽可能少的代码来完成功能，以减少潜在的bug。",
      "确保扩展在运行时占用最少的CPU和内存资源。",
      "在`manifest.json`的`permissions`字段中，只申请扩展正常工作所必需的最少权限。",
      "为用户提供简洁的UI，避免过多的配置选项。"
    ],
    "correctAnswerIndex": 2,
    "explanation": "“最小权限原则”是安全开发的核心原则。在Chrome扩展中，它意味着只向用户请求那些你的扩展功能确实需要的权限。请求不必要的权限会引起用户的警惕，也可能导致你的扩展在审核时被拒绝。这是建立用户信任和保证安全性的重要措施。",
    "source": "文档中「5. 注意事项」部分",
    "hint": "这一原则与扩展在安装时向用户展示的“权限请求”列表直接相关。"
  }
];
        console.log("Quiz Data:", JSON.parse(JSON.stringify(quizData))); // 添加这行用于调试，以可展开的JSON格式输出
        
        let currentQuestionIndex = 0;
        let score = 0;
        // 存储每个问题的回答状态
        const userAnswers = new Array(quizData.length).fill(null); 

        const questionTextEl = document.getElementById('question-text');
        const optionsListEl = document.getElementById('options-list');
        const resultContainerEl = document.getElementById('result-container');
        const quizContentEl = document.getElementById('quiz-content');
        const progressIndicatorEl = document.getElementById('progress-indicator');
        const prevBtn = document.getElementById('prev-btn');
        const nextBtn = document.getElementById('next-btn');
        const hintBtn = document.getElementById('hint-btn');
        const hintContainerEl = document.getElementById('hint-container');

        function loadQuestion() {
          resultContainerEl.innerHTML = '';
          optionsListEl.innerHTML = '';
          hintContainerEl.style.display = 'none'; // 隐藏提示
          
          if (currentQuestionIndex >= quizData.length) {
            showFinalScore();
            return;
          }

          updateProgress();

          const currentQuestion = quizData[currentQuestionIndex];
          questionTextEl.textContent = `(${currentQuestionIndex + 1}/${quizData.length}) ${currentQuestion.question}`;
          
          currentQuestion.options.forEach((optionText, index) => {
            const li = document.createElement('li');
            li.className = 'option-item';
            li.textContent = optionText;
            li.dataset.index = index; // Store index in a data attribute
            // 如果这道题已经回答过，恢复状态
            if (userAnswers[currentQuestionIndex] !== null) {
                if (index === userAnswers[currentQuestionIndex]) {
                    li.classList.add('selected');
                }
            }
            optionsListEl.appendChild(li);
          });

          // 如果已经回答过，直接显示结果
          if (userAnswers[currentQuestionIndex] !== null) {
              const isCorrect = userAnswers[currentQuestionIndex] === currentQuestion.correctAnswerIndex;
              showResult(isCorrect, currentQuestion);
          }
          
          updateNavigationButtons();
          updateProgress();
        }

        function selectOption(optionIndex) {
            userAnswers[currentQuestionIndex] = optionIndex;
            const currentQuestion = quizData[currentQuestionIndex];
            const isCorrect = optionIndex === currentQuestion.correctAnswerIndex;

            // 重新计算分数
            score = userAnswers.reduce((acc, answer, index) => {
                return answer === quizData[index].correctAnswerIndex ? acc + 1 : acc;
            }, 0);

            showResult(isCorrect, currentQuestion);
            updateNavigationButtons();
        }
        
        function updateProgress() {
            const answeredQuestions = userAnswers.filter(answer => answer !== null).length;
            const progressPercentage = (answeredQuestions / quizData.length) * 100;
            progressIndicatorEl.style.width = `${progressPercentage}%`;
        }
        
        function updateNavigationButtons() {
            prevBtn.style.display = 'block';
            nextBtn.style.display = 'block';
            hintBtn.style.display = 'block'; // 显示提示按钮

            prevBtn.disabled = currentQuestionIndex === 0;
            nextBtn.disabled = false; // 最后一题时，下一题按钮不禁用，而是用于显示报告
            nextBtn.textContent = (currentQuestionIndex === quizData.length - 1) ? '查看报告' : '下一题';
            
            // 如果当前问题没有提示，则禁用提示按钮并隐藏提示内容
            if (!quizData[currentQuestionIndex].hint) {
                hintBtn.disabled = true;
                hintContainerEl.style.display = 'none';
                hintContainerEl.textContent = ''; // 清除旧的提示内容
            } else {
                hintBtn.disabled = false;
            }
        }

        function showResult(isCorrect, questionData) {
            resultContainerEl.innerHTML = ''; // 清空之前的结果
            const resultBox = document.createElement('div');
            resultBox.className = `result-box ${isCorrect ? 'correct' : 'incorrect'}`;
            
            let html = `<h3>${isCorrect ? '回答正确！' : '回答错误'}</h3>`;
            if (!isCorrect) {
                html += `<p><strong>正确答案是：</strong> ${questionData.options[questionData.correctAnswerIndex]}</p>`;
            }
            html += `<div class="explanation-text">${questionData.explanation}</div>`;
            html += `<div class="source-text">来源: ${questionData.source}</div>`;
            
            resultBox.innerHTML = html;
            resultContainerEl.appendChild(resultBox);

            // 禁用所有选项的点击事件，并高亮正确/错误答案
            Array.from(optionsListEl.children).forEach((child, index) => {
                child.style.pointerEvents = 'none';
                // 高亮正确答案
                if (index === questionData.correctAnswerIndex) {
                    child.classList.add('correct'); // 需要添加CSS样式
                    child.style.backgroundColor = '#d4edda';
                    child.style.borderColor = '#c3e6cb';
                }
                // 如果选错了，高亮错误选项
                if (!isCorrect && index === userAnswers[currentQuestionIndex]) {
                    child.classList.add('incorrect'); // 需要添加CSS样式
                    child.style.backgroundColor = '#f8d7da';
                    child.style.borderColor = '#f5c6cb';
                }
            });
        }

        function goToNextQuestion() {
            if (currentQuestionIndex < quizData.length - 1) {
                currentQuestionIndex++;
                loadQuestion();
            } else {
                showFinalScore();
            }
        }

        function goToPreviousQuestion() {
            if (currentQuestionIndex > 0) {
                currentQuestionIndex--;
                loadQuestion();
            }
        }
        
        function showHint() {
            const currentQuestion = quizData[currentQuestionIndex];
            if (currentQuestion.hint) {
                hintContainerEl.textContent = currentQuestion.hint;
                hintContainerEl.style.display = 'block';
            } else {
                hintContainerEl.style.display = 'none';
            }
        }

        function showFinalScore() {
            document.querySelector('.quiz-body').style.display = 'none';
            document.getElementById('quiz-footer').style.display = 'none';

            const correctCount = score;
            const totalQuestions = quizData.length;
            const answeredCount = userAnswers.filter(a => a !== null).length;
            const wrongCount = answeredCount - correctCount;
            const skippedCount = totalQuestions - answeredCount;
            const accuracy = totalQuestions > 0 ? Math.round((correctCount / totalQuestions) * 100) : 0;
            const errorRate = totalQuestions > 0 ? Math.round((wrongCount / totalQuestions) * 100) : 0;

            const finalScoreHtml =
                '<div class="final-score-container">' +
                '<h2>答题报告</h2>' +
                '<div class="score-summary">' +
                '<div class="score-card">' +
                '<h3>得分</h3>' +
                '<p>' + correctCount + ' / ' + totalQuestions + '</p>' +
                '</div>' +
                '<div class="score-card">' +
                '<h3>正确率</h3>' +
                '<p>' + accuracy + '%</p>' +
                '</div>' +
                '<div class="score-card">' +
                '<h3>错误率</h3>' +
                '<p>' + errorRate + '%</p>' +
                '</div>' +
                '<div class="score-card score-details">' +
                '<table>' +
                '<tr><td>正确</td><td>' + correctCount + '</td></tr>' +
                '<tr><td>错误</td><td>' + wrongCount + '</td></tr>' +
                '<tr><td>未答</td><td>' + skippedCount + '</td></tr>' +
                '</table>' +
                '</div>' +
                '</div>' +
                '<div class="report-actions">' +
                '<button id="review-btn">回顾测验</button>' +
                '<button class="primary" onclick="location.reload()">再试一次</button>' +
                '</div>' +
                '</div>';

            let reportEl = document.querySelector('.final-score-container');
            if (reportEl) {
                reportEl.remove();
            }
            quizContentEl.insertAdjacentHTML('beforeend', finalScoreHtml);
            document.getElementById('review-btn').addEventListener('click', reviewQuiz);
        }

        function reviewQuiz() {
            const reportEl = document.querySelector('.final-score-container');
            if (reportEl) {
                reportEl.remove();
            }

            document.querySelector('.quiz-body').style.display = 'block';
            document.getElementById('quiz-footer').style.display = 'flex';
            
            currentQuestionIndex = 0;
            loadQuestion();
            updateNavigationButtons(); // Ensure nav buttons are correctly displayed
        }

        // Event Delegation for options
        optionsListEl.addEventListener('click', (event) => {
            if (event.target && event.target.matches('li.option-item')) {
                // Check if the question has already been answered
                if (userAnswers[currentQuestionIndex] === null) {
                    const selectedIndex = parseInt(event.target.dataset.index, 10);
                    selectOption(selectedIndex);
                }
            }
        });

        prevBtn.addEventListener('click', goToPreviousQuestion);
        nextBtn.addEventListener('click', goToNextQuestion);
        hintBtn.addEventListener('click', showHint);
        
        // 初始加载
        loadQuestion();
      </script>
    </body>
    </html>
  